Posted by Poly Wally on Thursday, April 01, 2004 at 5:46PM :
In Reply to: 1975 W-100 symptom posted by Jim Crane on Thursday, April 01, 2004 at 5:22PM :
cam for wear, remove the valve covers and have someone crank on it, see if all push rods are travleing the same distance, relatively. Could be that the lobes are getting worn - Mr Crane you should know this (Crane Cams?)
All the luck -
Poly Wally